Manufacture of warp goods provided



Feb. 28, 1939. R scHc-NFELD 2,149,031

MANUFACTURE OF WAR? GOODS PROVIDED WITH RUBBER THREADS Filed Oct. 2,1937 INVENTQR PA UL SCHONFELD B A AT TO RNEYS Patented ream, 1939MANUFACTURE OF WARP GOODS PROVIDED WITH RUBBER THREADS Paul Schiini'eld,Chemnitz, Germany Application October 2, 1937, Serial No. 166,908 InGermany February 13, 1937 4 Claims.

This invention relates to the manufacture of a plain warp fabricpossessing rubber warp threads on a warp loom having only one row ofneedles in such manner that the lower lapping 5 machine laps a groundfabric and the goods produced are elastic in both the longitudinal andtransverse directions. c

It is known to attain this object by carrying out underlaying operationswhen the rubber threads are gathered which are thus bound toward thesides with the result that the goods are elastic also in transversedirection. It has been found, however, that goods of this type tend toroll in from the longitudinal edges and are therefore not very wellsuited for further working.

The method according to the invention eliminates this drawback bygathering the rubber warp threads to be underlaid in two lappingmachines which are racked in opposite direction to one another or whichcarry out underlaying operations differing in magnitude.

By way of example,. the invention is illustrated in the accompanyingdrawing, in which Figures 1 and 2 show two lapping-diagrams.

The ground fabric is formed of the threads I drawn into the lowerlapping machine which, as shown in Figs. 1 and 2, laps under 1 over 1and back. The rubber warp threads 2, 3 are so gathered in two lappingmachines disposed under the lower machine and carrying out underiayingoperations by being racked either in opposite directions to one another,as shown in Fig.

1, or in the same direction. In the latter case,

85 the two rubber thread lapping machines carry out underlayingoperations differing in size. For clearness sake the drawing shows onlyone thread each of the two rubber thread groups.

, The gathering of the two machines depends upon the extent to which thefabric is to be provided with rubber threads. In case of goods to beonly partially provided with rubber threads each elastic point is formedof a rubber warp thread 2 of one machine and of a rubberfwarpti thread 3of the other machine.

It is further possible to ma fourth lapping machine disposed under therubber thread lapping machines and gathering textile threads so as toconnect a fabric layer with the ground fabric. The threads of the fourthlapping machine are designated 4 and, like the threads I, are lappedover 1 and under 1 and back. This provides for the covering of therubber warp "threads 5 on the rear side of the fabric. a v

The ground fabric may of course be lapped in a manner differing from theone shown, and this applies also to the covering layer formed of thethreads 4. The lapping method of the 10 rubber threads is alsoimmaterial. The important feature is that they carry out underlayingoperations and are drawn in two lapping ma-a chines to provide forlapping opposite to each other or in paths differing in size.

I claim:

1. A method of producing warp goods provided with rubber warp threads ona warp framehaving only onerow of needles, comprising lapping. a groundfabric with the lower machine and carrying out underlaying operationswith the rubber threads to .rnake'the goods elastic in both thelongitudinal and transverse directions, the lapping machine for therubber threads being racked in opposite direction to the first-mentionedmachine.

2. A method according to claim 1, wherein another lapping machinedisposedover the rubber thread lapping machine connects a textile fabriclayer covering the rubber threads with the ground fabric. 7

3. A method according to claim 1, wherein the rubber warp threads aregathered by two lapping machines which are racked in opposite directionsto each other, so that a rubber thread 35 from one of the twolast-mentioned lapping ma chines always crosses a rubber thread from theother one of the two last-mentioned lapping machines.

4. A method according to claim 1, wherein the rubber warp threads aregathered by two lapping machines carrying out underlaying operationswhich differ in size from each other, so that a rubber thread from oneof the two lastmentioned lapping machines always crosses a rubber threadfrom the other one of the two last-mentioned lapping machines.

PAUL scnomnn.

